The aim of the course is to discuss in detail the fiber (strucutural carbohydrate) digestion and metabolism in ruminants. Furthermore, the program content includes the approach of physical and metabolic aspects which are associated with the control of voluntary feed intake in ruminants.1. Structural carbohydrates in ruminant metabolism - characterization. 2. Ruminal kinetics, passage. 3. Fiber digestion in the digestive tract . 4.Animal requirements and fiber evaluation systems in ruminant diets 5. Feeding behavior and effective fiber. 6. Particle size 7. Physical processing of fiber sources. 8 Voluntary intake assessment methodology in ruminants. 9. Neural regulation, hormonal and aspects of metabolism in the control of voluntary intake in ruminants.